8:00 AM: -14°, clear, Feels like -19.
9:00 AM: -14°, clear, Feels like -19.
10:00 AM: -14°, partly cloudy, Feels like -19.
11:00 AM: -14°, overcast, Feels like -19.
12:00 PM: -14°, overcast, Feels like -19.
1:00 PM: -14°, overcast, Feels like -19.
2:00 PM: -14°, overcast, Feels like -19.
3:00 PM: -14°, overcast, Feels like -18.
4:00 PM: -12°, overcast, Feels like -17.
5:00 PM: -11°, overcast, Feels like -16.
6:00 PM: -10°, overcast, Feels like -15.
7:00 PM: -9°, overcast, Feels like -14.
8:00 PM: -8°, overcast, Feels like -13.
9:00 PM: -7°, overcast, Feels like -12.
10:00 PM: -7°, overcast, Feels like -12.
11:00 PM: -7°, overcast, Feels like -12.
12:00 AM: -7°, overcast, Feels like -11.
1:00 AM: -8°, overcast, Feels like -12.
2:00 AM: -8°, overcast, Feels like -12.
3:00 AM: -9°, overcast, Feels like -13.
4:00 AM: -9°, overcast, Feels like -13.
5:00 AM: -10°, overcast, Feels like -14.
6:00 AM: -10°, overcast, Feels like -14.
7:00 AM: -11°, overcast, Feels like -15.
Weather on 21 January, Tuesday — Loudoun County
Air
Air Quality Index (AQI)
8:00 AM: 38
9:00 AM: 35
10:00 AM: 31
11:00 AM: 29
12:00 PM: 28
1:00 PM: 28
2:00 PM: 31
3:00 PM: 36
4:00 PM: 42
5:00 PM: 44
6:00 PM: 44
7:00 PM: 44
8:00 PM: 42
9:00 PM: 39
10:00 PM: 36
11:00 PM: 35
12:00 AM: 35
1:00 AM: 35
2:00 AM: 40
3:00 AM: 46
4:00 AM: 52
5:00 AM: 56
6:00 AM: 60
7:00 AM: 65
Wind, m/s
8:00 AM: , 2.5 Meters per second, up to 4 Meters per second, north-westerly.
9:00 AM: , 2.2 Meters per second, up to 3 Meters per second, north-westerly.
10:00 AM: , 2.5 Meters per second, up to 4 Meters per second, north-westerly.
11:00 AM: , 2.5 Meters per second, up to 4 Meters per second, north-westerly.
12:00 PM: , 1.8 Meters per second, up to 3 Meters per second, north-westerly.
1:00 PM: , 1.7 Meters per second, up to 3 Meters per second, westerly.
2:00 PM: , 1.6 Meters per second, up to 3 Meters per second, westerly.
3:00 PM: , 1.2 Meters per second, up to 2 Meters per second, westerly.
4:00 PM: , 2 Meters per second, up to 3 Meters per second, westerly.
5:00 PM: , 2.4 Meters per second, up to 3 Meters per second, westerly.
6:00 PM: , 2.5 Meters per second, up to 4 Meters per second, westerly.
7:00 PM: , 2.7 Meters per second, up to 4 Meters per second, westerly.
8:00 PM: , 2.7 Meters per second, up to 4 Meters per second, westerly.
9:00 PM: , 1.8 Meters per second, up to 3 Meters per second, south-westerly.
10:00 PM: , 2.2 Meters per second, up to 3 Meters per second, south-westerly.
11:00 PM: , 1.8 Meters per second, up to 3 Meters per second, southerly.
12:00 AM: , 1.2 Meters per second, up to 2 Meters per second, southerly.
1:00 AM: , 1.3 Meters per second, up to 2 Meters per second, south-easterly.
2:00 AM: , 1.2 Meters per second, up to 2 Meters per second, easterly.
3:00 AM: , 1.2 Meters per second, up to 2 Meters per second, south-easterly.
4:00 AM: , 1.6 Meters per second, up to 3 Meters per second, south-easterly.
5:00 AM: , 1.5 Meters per second, up to 3 Meters per second, south-easterly.
6:00 AM: , 1.2 Meters per second, up to 2 Meters per second, southerly.
7:00 AM: , 1.6 Meters per second, up to 2 Meters per second, south-westerly.
Pressurenormal 742−762 mmHg
Pressure normal 742−762 mmHg
- 8:00 AM: 767 millimeters of mercury,
- 9:00 AM: 768 millimeters of mercury,
- 10:00 AM: 767 millimeters of mercury,
- 11:00 AM: 767 millimeters of mercury,
- 12:00 PM: 768 millimeters of mercury,
- 1:00 PM: 767 millimeters of mercury,
- 2:00 PM: 767 millimeters of mercury,
- 3:00 PM: 769 millimeters of mercury,
- 4:00 PM: 768 millimeters of mercury,
- 5:00 PM: 767 millimeters of mercury,
- 6:00 PM: 768 millimeters of mercury,
- 7:00 PM: 768 millimeters of mercury,
- 8:00 PM: 767 millimeters of mercury,
- 9:00 PM: 767 millimeters of mercury,
- 10:00 PM: 765 millimeters of mercury,
- 11:00 PM: 765 millimeters of mercury,
- 12:00 AM: 766 millimeters of mercury,
- 1:00 AM: 765 millimeters of mercury,
- 2:00 AM: 765 millimeters of mercury,
- 3:00 AM: 766 millimeters of mercury,
- 4:00 AM: 765 millimeters of mercury,
- 5:00 AM: 765 millimeters of mercury,
- 6:00 AM: 766 millimeters of mercury,
- 7:00 AM: 765 millimeters of mercury,
Humidity
8:00 AM: 62%
9:00 AM: 61%
10:00 AM: 61%
11:00 AM: 62%
12:00 PM: 62%
1:00 PM: 64%
2:00 PM: 63%
3:00 PM: 64%
4:00 PM: 59%
5:00 PM: 56%
6:00 PM: 49%
7:00 PM: 46%
8:00 PM: 42%
9:00 PM: 43%
10:00 PM: 45%
11:00 PM: 49%
12:00 AM: 51%
1:00 AM: 55%
2:00 AM: 61%
3:00 AM: 70%
4:00 AM: 71%
5:00 AM: 74%
6:00 AM: 75%
7:00 AM: 75%
UV Index
8:00 AM: 0
9:00 AM: 0
10:00 AM: 0
11:00 AM: 0
12:00 PM: 0
1:00 PM: 0
2:00 PM: 0
3:00 PM: 0
4:00 PM: 0
5:00 PM: 1
6:00 PM: 1
7:00 PM: 2
8:00 PM: 2
9:00 PM: 2
10:00 PM: 1
11:00 PM: 1
12:00 AM: 0
1:00 AM: 0
2:00 AM: 0
3:00 AM: 0
4:00 AM: 0
5:00 AM: 0
6:00 AM: 0
7:00 AM: 0
Visibility
8:00 AM: >10 km
9:00 AM: >10 km
10:00 AM: >10 km
11:00 AM: >10 km
12:00 PM: >10 km
1:00 PM: >10 km
2:00 PM: >10 km
3:00 PM: >10 km
4:00 PM: >10 km
5:00 PM: >10 km
6:00 PM: >10 km
7:00 PM: >10 km
8:00 PM: >10 km
9:00 PM: >10 km
10:00 PM: >10 km
11:00 PM: >10 km
12:00 AM: >10 km
1:00 AM: >10 km
2:00 AM: >10 km
3:00 AM: >10 km
4:00 AM: >10 km
5:00 AM: >10 km
6:00 AM: >10 km
7:00 AM: >10 km
